DEN87FA237

NTSB accident investigation · Fairchild Hiller FH-1100 · Pinedale, WY · September 13, 1987

Accident · Serious injuriesField investigationFinal report
Date
September 13, 1987, 10:30 local (16:30 UTC)
Place
Pinedale, WY
Injuries
3 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N5059FFairchild Hiller FH-1100
Weather
Visual (VMC) · Day
Status
Completed · report May 16, 1989
Report
Approved by Office Director
Case key
17132

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Analysis

The plt and two passengers had flown to Pinedale to fish. The plt stated that he was cruising at an alt of 400 ft AGL and was executing a rt turn at the request of a pax. He stated that he slowed the acft, decreased the collective, and added rt pedal as he entered the turn. The acft began to descend rapidly so he atmptd to correct with full collective and aft cyclic ctl, but the acft impacted the gnd. The postcrash exam of the wreckage revealed no evidence of a mech malfunction or failure prior to the acc. The density alt was calculated to be 9,553 ft. the basic helicopter handbook states that turns are entered from straight and lvl flt by applying sideward pressure on the cyclic. It also says that this is the only ctl movement necessary to start the turn and that pedals should not be used to assist the turn. Witnesses indicated that the acft had been flying low over the area throughout the weekend.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with terrain/waterManeuvering
Terrain condition - mountainous/hillyFactor
In-flight planning/decision - improperPilot in commandCause
Weather condition - high density altitudeFactor
Low pass - intentionalPilot in commandFactor
Rotorcraft flight controls - improper use ofPilot in commandCause
Lack of total experiencePilot in commandFactor
Lack of familiarity with geographic areaPilot in commandFactor
Remedial action - inadequatePilot in commandCause

Aircraft

Registration
N5059F
Reported as
Fairchild Hiller FH-1100
Category
Helicopter
Serial number
220
Engine
Allison 250-C18B, 274 horsepower, turbo shaft
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Registered owner
Huish Chemical Company
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 14, 1987

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
34
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Toxicology
Performed
Flight hours
221 total · 86 in this make and model · 145 as pilot in command · 49 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 3 knots
Visibility
40 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 36 °F
Altimeter
29.00 inHg

Other investigations on N5059F · 1

Matched to the same aircraft by N-number and date.